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  2. Centrifugal pump - Wikipedia

    en.wikipedia.org/wiki/Centrifugal_pump

    Power is more commonly expressed as kilowatts (10 3 W, kW) or horsepower (1 hp = 0.746 kW). The value for the pump efficiency, , may be stated for the pump itself or as a combined efficiency of the pump and motor system.

  3. Specific pump power - Wikipedia

    en.wikipedia.org/wiki/Specific_pump_power

    Specific Pump Power (SPP) is a metric in fluid dynamics that quantifies the energy-efficiency of pump systems. It is a measure of the electric power that is needed to operate a pump (or collection of pumps), relative to the volume flow rate. It is not constant for a given pump, but changes with both flow rate and pump pressure.

  4. Thermal efficiency - Wikipedia

    en.wikipedia.org/wiki/Thermal_efficiency

    Gross heating value accounts for water in the ... energy used by auxiliary equipment like oil and water pumps. ... for a boiler that produces 210 kW (or 700,000 BTU/h ...

  5. Coefficient of performance - Wikipedia

    en.wikipedia.org/wiki/Coefficient_of_performance

    Measured values for actual systems will always be significantly less than these theoretical maxima. In Europe, the standard test conditions for ground source heat pump units use 308 K (35 °C; 95 °F) for and 273 K (0 °C; 32 °F) for . According to the above formula, the maximum theoretical COPs would be

  6. Pump - Wikipedia

    en.wikipedia.org/wiki/Pump

    A hydraulic ram is a water pump powered by ... 1 ⁄ 3 horsepower (0.25 kW). 85-millimetre (3.3 in) diameter impeller rotates counter-clockwise. Left: inlet, right ...

  7. Centrifugal pump selection and characteristics - Wikipedia

    en.wikipedia.org/wiki/Centrifugal_pump_selection...

    The basic function of a pump is to do work on a liquid. It can be used to transport and compress a liquid. In industries heavy-duty pumps are used to move water, chemicals, slurry, food, oil and so on. Depending on their action, pumps are classified into two types — Centrifugal Pumps and Positive Displacement Pumps. While centrifugal pumps ...

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